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Map Includes vs Some Simplified
(version: 0)
Comparing performance of:
Map Includes vs Some
Created:
2 years ago
by:
Guest
Go to the latest result
Script Preparation code:
var data = [] for (let i = 0; i < 5000; ++i) data.push({ username: 'toto' }) data.push({ username: 'tata' }) for (let i = 0; i < 2500; ++i) data.push({ username: 'toto' })
Tests:
Map Includes
data.map(({username}) => username).includes("tata");
Some
data.some(({username}) => username == "tata");
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Map Includes
Some
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
2 years ago
)
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0
Browser/OS:
Firefox 115 on Windows
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=495214" width="100%" height="500px"></iframe>
Some
27K/s
Map Includes
10K/s
View exact numbers
Test name
Executions per second
✓
Some
26,991 Ops/sec
Map Includes
9,853 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided benchmark and explain what's being tested, compared, and analyzed. **Benchmark Overview** The benchmark is designed to compare two different ways of checking if an element exists in an array: using `Array.includes()` versus `Array.some()`. The test case creates a large array of 7,500 objects with a single property "username" and pushes it into the array. Then, it checks if a specific username ("tata") is included in the array using both methods. **Comparison Options** The two comparison options are: 1. `Array.includes()` 2. `Array.some()` **Pros and Cons of Each Approach** 1. **`Array.includes()`**: * Pros: + More readable and concise code + Faster lookup time (average O(1) complexity) * Cons: + Requires the element to be an exact match (no partial matches are returned) 2. **`Array.some()`**: * Pros: + Allows for partial matches + More flexible, as it can be used with other array methods like `every()` * Cons: + Slower lookup time (average O(n) complexity), making it less suitable for large arrays **Library and Syntax** In this benchmark, the `Array` object is being tested. The `some()` method is a part of the ECMAScript standard, introduced in ECMAScript 1999. **Special JS Feature/Syntax** None mentioned. **Other Alternatives** For checking if an element exists in an array, other alternatives include: 1. **Using `Array.prototype.includes()` with a callback function**: This allows for more flexibility and can be used to check for partial matches. ```javascript data.some((element) => { return typeof element === 'object' && element.username === 'tata'; }); ``` 2. **Using `Array.prototype.find()` or `Array.prototype.findIndex()`**: These methods are more modern and offer better performance, but may not be supported in older browsers. **Benchmark Preparation Code** The script preparation code creates a large array of 7,500 objects with a single property "username" and pushes it into the array: ```javascript var data = []; for (let i = 0; i < 5000; ++i) { data.push({ username: 'toto' }); } data.push({ username: 'tata' }); for (let i = 0; i < 2500; ++i) { data.push({ username: 'toto' }); } ``` The HTML preparation code is empty, indicating that no HTML-specific code is being used in this benchmark.
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